Project Description

The Snowy Mountains Hydro-electric Scheme was built within the Kosciuszko National Park, New South Wales between 1949-74 and continues to be recognised as one of the civil engineering wonders of the world.

The Snowy 2.0 project is a major expansion of the Snowy Scheme to link two existing reservoirs with tunnels and a new pumped-hydro power station to be located 800m underground. The project will provide on-demand power generation and increase generation capacity by almost 50%, or enough capacity to power 50,000 homes simultaneously.

As part of early site activity, geotechnical drilling along the project alignment collected more than 35,000 metres of drill core over three years. The project area is a complex geological setting with implications for the engineering geology. The project site includes a wide range of rock types and geological structures, a hydrogeological situation with potential impacts due to the planned underground openings and a geomorphological setting that provides an insight into potential issues for the Project works.

For Snowy Hydro 2.0 exploratory works involved extensive horizontal drilling in situ, and at depth, so detailed geological data can be collected about the rock types, conditions, ground temperature and stress conditions. The information collected from exploratory works will inform the design and construction of the cavern for the underground power station – one of the most challenging areas in the project design.

Snowy Hydro